Finding the Fourth Proportional to 324.91, 487.44 and 142.26
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Solution
The fourth proportional to 324.91, 487.44 and 142.26 is: 213.42
Step by Step Solution
- Step 1: Write the proportion equation
324.91 : 487.44 = 142.26 : x - Step 2: Convert to fraction form
324.91/487.44 = 142.26/x - Step 3: Cross multiply
324.91x = 487.44 × 142.26 - Step 4: Simplify right side
324.91x = 69,343.21 - Step 5: Solve for x
x = 69,343.21/324.91 - Step 6: Final answer
x = 213.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.